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Updated: Mar 28, 2026
An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues
Published on: April 5, 2018
A Multiplexed System for Quantitative Comparisons of Chromatin Landscapes
Peter van Galen1, Aaron D Viny2, Oren Ram1
1Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA; Harvard Medical School, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Center for Cancer Research, Massachusetts General Hospital, Boston, MA 02114, USA.
This study introduces a new DNA barcoding technology for quantitative, multiplexed profiling of histone modifications. This method enables detailed epigenetic studies on rare cells and various conditions.
Area of Science:
- Epigenetics and Genomics
- Molecular Biology
- Biotechnology
Background:
- Histone modifications are crucial for understanding gene regulation and cellular programs.
- Conventional chromatin immunoprecipitation and sequencing (ChIP-seq) has limitations in quantitative analysis, sample input, and processing efficiency.
Purpose of the Study:
- To develop a novel technology for quantitative and multiplexed profiling of histone modifications.
- To overcome the limitations of traditional ChIP-seq methods.
Main Methods:
- Leveraging DNA barcoding for quantitative chromatin profiling.
- Multiplexed analysis of multiple histone modifications across various samples.
- Application to as few as a thousand cells.
Main Results:
- Demonstrated dynamic changes in histone modifications after inhibiting key enzymes (p300, EZH2, KDM5).
- Linked altered epigenetic landscapes to specific chromatin regulator mutations.
- Mapped active and repressive histone marks in purified human hematopoietic stem cells.
Conclusions:
- The developed technology enables quantitative studies of chromatin state dynamics.
- Facilitates research on rare cell types, diverse genotypes, environmental factors, and drug treatments.
- Offers a more efficient and sensitive approach to epigenetic profiling.
